(quantum-mehcanics:history:origin-wave-mechanics)=
# Origin of wave theory of quantum mechanics

Main contributions from:

* [L. de Broglie](quantum-mehcanics:history:wave-mechanics:de-broglie), (1922-24): matter waves

* [E. Schrodinger](quantum-mehcanics:history:wave-mechanics:schrodinger), (1926) "An Undulatory Theory of the Mechanics of Atoms and Molecules":  wave equation. "if a phenomenon behaves like a wave, it must be governed by a wave equation"

Experimental verifications:

* Davisson-Germer experiment (1923-27) confirmed the hypothesis of L. de Broglie: $e^-$ scattered by a surface of a metal crystal showed a diffraction pattern, a characteristic phenomenon of wave processes, consistent with the relation postulated by de Broglie linking the wave vector and the momentum $\mathbf{k} = \frac{\mathbf{p}}{\hbar}$.

Reinterpretation and classical limit:
* ...